Abstract
A simple and reproducible method was developed to synthesize a novel class of Co-B/SiO 2/dye/SiO 2 composite core/shell particles. Using a single cobalt core, Rhodamine 6G of organic dye molecules was entrapped in a silica shell, resulting in core/shell particles of ∼200 nm diameter. Analyses using a variety of techniques such as transmission electron microscopy, X-ray photoelectron spectroscopy, vibration sample magnetometry, confocal laser scanning microscopy, and fluorescence intensity demonstrated that dye molecules were trapped inside the core/shell particles. A photoluminescence investigation showed that highly luminescent and photostable core/shell particles were formed. Such core/shell particles can be easily suspended in water. The synthesized magnetic particles could be used to detect fluorescence on glass substrate arrays for bioassay and biosensor applications.
Original language | English |
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Pages (from-to) | 4101-4106 |
Number of pages | 6 |
Journal | Materials Research Bulletin |
Volume | 47 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2012 Dec |
Bibliographical note
Funding Information:This study was supported by an Advanced Biomass R&D Center ( ABC-2010-0029799 ) of Korea Grant funded by the Ministry of Education, Science, and Technology .
Keywords
- A. Magnetic materials
- B. Sol-gel chemistry
- D. Luminescence
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering